/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.extensions.sql.impl.planner;



import org.apache.calcite.adapter.java.JavaTypeFactory;

import org.apache.calcite.jdbc.JavaTypeFactoryImpl;

import org.apache.calcite.rel.type.RelDataType;

import org.apache.calcite.sql.type.BasicSqlType;

import org.apache.calcite.sql.type.IntervalSqlType;

import org.apache.calcite.sql.type.SqlTypeName;



import java.lang.reflect.Type;



/** customized data type in Unified. */

public class UnifiedJavaTypeFactory extends JavaTypeFactoryImpl {

  public static final JavaTypeFactory INSTANCE = new UnifiedJavaTypeFactory();



  private UnifiedJavaTypeFactory() {

    super(UnifiedRelDataTypeSystem.INSTANCE);

  }



  @Override

  public Type getJavaClass(RelDataType type) {

    if (type instanceof BasicSqlType || type instanceof IntervalSqlType) {

      if (type.getSqlTypeName() == SqlTypeName.FLOAT) {

        return type.isNullable() ? Float.class : float.class;

      }

    }

    return super.getJavaClass(type);

  }

}